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GW200115: a non-spinning black hole -- neutron star merger

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arxiv 2109.14759 v2 pith:73LTGHQY submitted 2021-09-29 astro-ph.HE astro-ph.SRgr-qc

Ilya Mandel , Rory J. E. Smith This is my paper · ORCID
classification astro-ph.HEastro-ph.SRgr-qc
keywords blackholeneutronnon-spinningstarbinarygw200115merger
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GW200115 was the second merger of a black hole and a neutron star confidently detected through gravitational waves. Inference on the signal allows for a large black hole spin misaligned with the orbital angular momentum, but shows little support for aligned spin values. We show that this is a natural consequence of measuring the parameters of a black hole -- neutron star binary with non-spinning components while assuming the priors used in the LIGO-Virgo-KAGRA analysis. We suggest that, a priori, a non-spinning binary is more consistent with current astrophysical understanding.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Constraints on Line-of-Sight Acceleration from O1-O4

    astro-ph.HE 2026-06 unverdicted novelty 7.0 of 10

    All known compact binary mergers show line-of-sight accelerations consistent with zero under a new time-domain Doppler-shift model, with current detectors only sensitive to high-acceleration scenarios.

  2. The impact of the formation channel on gravitational-wave-galaxy cross-correlations

    astro-ph.CO 2026-02 conditional novelty 5.0 of 10

    GW-galaxy cross-correlation forecasts depend strongly on the assumed binary time-delay distribution but barely on the mass-transfer prescription, with detections predicted only for long delays against shallow surveys.

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